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Posted to issues@arrow.apache.org by "R J (Jira)" <ji...@apache.org> on 2021/01/17 00:36:00 UTC

[jira] [Created] (ARROW-11279) [Rust][Parquet]

R J created ARROW-11279:
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             Summary: [Rust][Parquet]
                 Key: ARROW-11279
                 URL: https://issues.apache.org/jira/browse/ARROW-11279
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Rust
            Reporter: R J


In the rust implementation of an Arrow RecordBatch writer to parquet (3.0.0-SNAPSHOT), the ArrowWriter::write call potentially allocates more memory than required.

For a RecordBatch with m rows and n columns, ArrowWriter::write allocates m*n definition levels, leading to m times the required memory usage.



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